Controller finger



Oct.. 1 5, 1929.

ROSE CONTROLLER FIKGER Filed Nov. 21, 1925 INVENTOR Edward E. 7805a.

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' ATTORNEY Patented Oct. 15,, 1929 My invention relates to contact fingers, primarily designed for use in controllers.

The object of my invention, generally stated, is the provision of a contact finger that shall be simple and ellicient in operation and readily and economically manufactured.

,d. more specific object my invention is to provide for the free movement of the con tact member so that it will accommodate itself to uneven surfaces.

it is also an object of the invention to proride for the setting of the contact finger to restrain the contact member against movement beyond a predetermined plane.

"Other objects oi the invention will, in part, be obvious and in part will appear hereinafter.

The invention accordingly is disclosed in the embodiment thereof shown in the accom panying drawings and comprises the features of construction, combination ot' elements and arrangement of parts which will be exemplifled in the construction hereinafter set forth and the scope ot the application ot' which will be indicated in the claims.

For a geneml understanding of the nature and objects oi: the invention, reference should be had to the following detailed description taken in connection with the accompanying drawing, in which;v

Fig. l, is a view in side elevation showing one embodinrient oil a device constructed in accordance with this invention;

1 in. 2 a'longitudinalsectional view SlIOW" inc; features of the construction; I

Fig. 3 is a view, partly in section and partly in elevation, showing details of construction; I

l is a top plan view. Referring now to the drawing, the retorcncc character 10 indicates generally the base of the contact linger, which is provided with an inclined portion llihat is adapted to. be fastened to a board or other support usually provided in controllers or the like. its illustrated, the member 11 has an opening 12?. provided. therein for the reception oi? a bolt 12 or other means that may be pro- Tl(ll:"i for at-ttaching. it to any support.

shown, a substantially straight portion sTArEs PATENT OFFICE liilllilirlttltlfi llllidld, EDGElEWIBMl), lEENHfiYlL'llANIA, ASSIGNOR "l'silihltll lttlitfl d:- MfiiNlJ'IRdflT'llR-lldhl COMPANY, A. fiCiIl-HORATION 013 T WESTINGHOUSE PENNSYLVANIA.

contentions rmenri.

Application filed November 21, 1925. Serial No. 70,535.

13 is provided on the base as a continuation of inclined portion 11 for the reception of a contact carrier to be described hereinafter. In order to facilitate the mounting of the contact carrier, a projection or lug 14 is provided on the outer end of the base and an opening 15 is formed near the point of juncture of the portion 13 with the board-engaging portion 11.

With a view to mounting a contact memberor tip 16 so that it may move relatively to the base portion 13, a contact carrier 17 is movably mounted on the base. In this par ticular construction, the carrier 17 com-- prices a metal strip, the ends of which are curved downward. As will be observed, the curved portion on the outer end, or the end remote from the board-engaging portion 11 of the base, is considerably longer than the curved portion of the inner end, thus adapt ing it for the reception of the contact memher 16.

The contact member 16 may be attached to the outer end of the contact carrier in any suitable manner, and in this particular construption the contact member is formed with an upwardly extending stud 18, which extends through an opening in the metal strip 1? and is spun over, thus giving a rigid connection. y

In order to provide for the free movement of the Contact member 16, the contact carrier 17 is pivotally mounted on the portion 13 of the base so that it may be freely oscillated about a longitudinal axis. As shown, the inner end of the carrier 17 is provided with a downwardly inclined projection 19, which is shaped to engage the opening 15 in the base. Itormed in the contact carrier in a vertical portion near its outer end is anelongated opening that is adapted to receive the projection 14- on the enter end of the base.

it will be observed that, by reason of the illustrated arrangement of parts, the straight portion of the contact carrier 17 is spaced tron-1 the outer end of the base portion 1. Thus the outer end of the contact carrier may be oscillated about the projection 14. in order to permit the inner end of the contact carrier to root: on the hose, the inner end I is curved on each side ofprojection19, as

- of the plate 17, thus adapting shown in Fig. 4. Therefore it may be said that the carrier is supported on two pivots 14 and 19.

The contact carrier 17, in this particular construction, is retained in position on the base by means of a spring 21, which is mounted on a bolt 22 that is secured in the base portion 13 and extends through an opening 26 in the carrier 17. As shown, the opening 26 is made considerably larger in diameter than the bolt 22. Therefore, when the carrier is mounted in the manner described it may be oscillated about a transverse axis extending through the inner end it to ride over raised portions on a contact rum.

In order to'set the contact carrier 17 and the contact member 16 in any desired position relativefto the base, a set screw 23 is adjustably mounted in the-forward end of the contact carrier near the outer end of the base.

' The set screw may be locked in any position by means of a lock nut 24, As willbeobserved, the rounded end of set screw 23, if

adjusted to force the projection l i out of its seat will serve as a pivot point for the contact carrier-17.

The contact member 16 may be connected to a source'of electrical current supply in a number of ways. However, in this articular embodiment of the invention a exible conductor or shunt is provided. As shown, the" outer end of the conductor is clamped between the outer end of the contact carrier 17 and the contact member 16. The body of the conductor extends beneath the base 10 and may be clamped in position by means of the bolt 12 that is provided for attachingthe base to its support." In setting the contact finger for operation, the set. screw 23 is ad'usted to properly space the contact carrier 1 from the base 10, and

to position the contact member 16 toiide'on the desired drum segment. If the drum segment has any raised portions, the contact carrier 17 may'oscillatlfreely about a 'ment.

, above construction and difierent embodi- -ments of the invention may be made without transverse axisextending 'through its inner I end and the s ring 21 continuously urges the contact mem r 16 toward the drum seg- If the drunr segment over which the con;

tact member 16 is moving is uneven laterally,

the contact carrier 17 may freely oscillate about a longitudinal axisextending through the projection 19 and the opening 20 or the end of the'set screw 23. Thus it will be seen that the contact member 16 may move freely to accommodate itself to any unevenness in 00 a contact segment. Y

Since certain changes may be made in the departing from the scope thereof, it is intended that all matter contained in the above nation, a base provided with a fiat portion having a projection formed on the outer end, a contact carrier rovided with a projection on its inner end, t 1e inner end of the contact carrier being curved upwardly from the projection to provide a rocker, said base being provided with an 0 ening to receive the carrier projection an said carrier having an opening for receiving the base projection, whereby the carrier may be mounted on the base to oscillate about its longitudinal axis, means for retaining the carrier in position on the base and adjustable means for setting the carrier relative to the base.

2. A control fin er comprising a base hav- "ing a projection 'ormed on its outer end, a contact carrier having a projection formed on its inner end, the end of the carrier being curved to provide a rocker to seat on'thc base,

said base being provided with an opening to receive the carrier projection and said carrier having an opening to receive the base pro ection whereby the carr er may be pivoted on the base to oscillate about a longitudinal axis, resilient means for retaining the carrier in position thereby to permit oscillatory movement about a transverse axis extending through the inner end of the contact carrier, and means for setting the forward end of the carrier relative to the base.

4. A contact finger comprising, in combitherefrom, a contact carrier provided with a base engaging projection end, said end bein curve upwardly from rovided on one.

nation, a base having a projection extending the projection, the use beingprovided with an opening to receive the carr er projection,

'the carrier being provided with a slot to re- 'j'ceive the base projection, said carrier slot and base projectionbeing disposed to guide and limit the movement of the carrier and resilient means disposedto continuously press the carrier toward the base thereby to retain the carrier in position. v In testimony whereof, I have hereurito subscribed my name this 17th day of November,

EDWARD E. ROSE. 

